Sam Allardyce has criticised the Premier League for bringing in new regulations that Everton voted for.
Allardyce has railed against the early closure of the summer transfer window.
Premier League clubs voted back in September over whether the final day of the summer window should be brought forward to before the start of the season.
Fourteen clubs voted in favour of the proposal – including Everton – while five voted against. Burnley abstained.
The summer transfer window will now close on August 9 this year, with the first game of the Premier League season taking place the following day.
Allardyce believes that is unnecessarily restrictive for clubs, particularly in a World Cup year.
“From a personal point of view, as a manager who deals with it, yeah, I think the Premier League has shot itself in the foot,” he said.
“I think the difficulty for us is that other countries’ windows stay open a lot longer. I can’t understand that. You are giving them an advantage.
“It is always us who suffers in changes that are not beneficial to football in general.
“This summer the window will be even shorter anyway. There is very little business done during the World Cup finals, clubs tend to wait until afterwards. So how long does that leave before the window shuts? About three weeks – that will make it even more difficult, and give very little time to get business sorted.
“I thought the FIFA regulation was we had to fall in line in the same window, which is why our system got changed many years ago. But now they’ve decided other countries can shut their window earlier or later.
“Last year they stopped us getting emergency loans because we have to fall in line, but when it comes to the shutting of the window some can keep it open longer than others, I just find it very difficult to comprehend or understand.”